Unions represent only about 1 per cent of the hourly workforce of Amazon, the world’s second-largest private employer after Walmart, and it has multiple locations in many metro areas.Amazon.com workers at seven US facilities walked off the job early on Thursday during the holiday shopping rush, aiming to pressure the retailer into contract talks with their union.The company, however, said it does not expect any effect on its operations during one of the busiest times of the year. Do you thin that big tech companies only help you to survive ?